Liquid dispensing unit



y 1936. 1.. w. EVANS LIQUID DISPENSING UNIT Filed July 14, 1954INVENTOR. 4/ 1 /en e//y/7 W 1/5/75 A woman Patented July 14, 1936 UNITEDSTATES Application Ju y 34,, Ser al No... .353%

2 Claims.

T e invention relates to an a paratus incense rated w t a on ine for usein dis ensi li uids such as lubr ing .oi s and the like at servicestations, garages etc.

An object of the invention is to provide an appa a of e characte d s i dwhi h wi l p rmit of the displacement or even removal oi the operativeparts thereof for inspection or rerpai but w ll p v nt u th rizedx efiline c the container at times,

Another object of the invention is to provide an pparatus of thecharacter d s r bed n wh ch all parts thereof, including the means forpreventing the unauthorized refi ling of the container, are built in asa unit with the cover for the container.

A further object of the invention is to provide e s of the characterdescribed wh ch may b used to modify existing types of dispensing con,-talners so as ,to render them immune from unauthorized r filling.

A still further object of the invention is toprovide means in accordancewith my invention which when used in connection with an existing'form ofdispensing container, may be operatively superimposed on the originalcover of the container and furnished with the operating parts formerlypro..- vided thereon.

The invention possesses other Objects and features of advanta e, some atwhi with the toreo w be et f th n th fol owin de cr p tion of thepreferred form of the intention which is illustrated in the drawinaccompanying and forming P of h s ec fi tion,- It is to he understood,however, that variations in theshowr ing made :by the said drawing anddescription ay be ap Within the ce hi th in ention as set forth in theclaims.

Referring to said drawing;

Fi ure "1 is .a de e t on partly n ection c a dispe se pa s o thecontain r asso iated therewith b in brcken away.

Figu e 2 is a larged view simil tohie re but with more of the parts insection.

Figure 3 is a iew similar to Figure 1, showing a d p ng un tcf an xi tng" t e, andbe crl being modifi d n acco anc with y inventh In the p nembo iment of the inve t on the dispensin u t is o a form adaptin i orrise in co nection with a con a e .13 uc as i more vor .le s ener l usey se rice s at on .icr d s nsing ub ating Oi in .iiihh l hsli measuredquantity. The container before being modified for use with my unit hasprovided thereon, as shown in Figure 3, all of the members (01-.gal-+72).

and connections which are necessary for his troducing the oil to ordischarging same from the interior of the receptacle, the said membersand connections being all mounted or provided on the cover .4 of thecontainer. From said Eig- 5 ure 3 it be seen that there are provided inthe cover .4 three openings or connections 6, I, and 8, the first ofwhich serves for the accommoda-tion of the suction pipe .9 of a pump I?on the cover, the second affords a means of inlet for the oil, while thethird accommodates the movable return drain pipe I3 usually provided inconnection with the pump discharge terminal. A further opening I4 isusually also provided in the cover for accommodation and guidance of agauge stick l6. It will be obvious that should it be desired, any onemay insert liquid in the container by way of the drain pipe with almostthesame facility as through the inlet opening 1. Furthermore since thepump is merely .secured in position by means of bolts l1,'it may bereadily detached so as to withdraw the suction pipe from opening 6, andthus permit of liquid being introduced into the container interiorthrough such opening. It will thus beevident that, notwithstanding somemeans be provided for preventing introduction of liquid through thenormal inlet, a person so desiring may readily insert inferior oil orother liquid into the container practically with no difficulty. 0

As a ready and efiective means of preventing the unauthorized insertionof oil in the container inthe type described, -I provide a unit l8 whichwhile involvingtheuse of an auxiliary container cover J9 utilizes, ifdesired, all of the operating parts such as the pump 12, the returndrain device l3, and the gauge stick I 6. Furthermore the four openings6, :1, 18, and M, in the cover 4, are likewise utilized for a purposesubstantially .corresponding to that for which they were used in the 0original'form of the container, and in a manner making unnecessary themutilation of such cover toany extent.

The .corerlS, as will be clear from Figures 1 and 2 has mounted thereonthe pump t2 and oil-return v ce I3, nd while these latter parts ci eother than :thesecr sina v ore.- viile icn .e ntai er ,I nrei i rihesake cf and -..c nv nien t us t e r g n ls t W b hnsler tecd-thateithe cese at the ,Ihc iiyl e cr ation th Pum retu n de ic ares hed omthe c er hus l avin proj cting riwardiy horn the le ter m rely theupstanding flange 2| surrounding the inlet opening 1. The cover I9 isdesigned to completely 55 overlie and conceal the cover 4 and isprovided with a depending flange 22 which fits around the sides 23 ofthe container. In order that the cover l9 may set evenly on thecontainer, a spacer 24 of the same depth as the flange 2| is afiixed tothe under side of the cover and arranged to engage the upper surface ofcover 4. Attachment of the cover IS in position may be effected bywelding, sweating, or otherwise permanently securing the flange 22 tothe sides of the container, but such attachment is made only after therehas been secured to the cover such members and parts as are arranged forpermanent attachment thereto.

In the present form of the invention the pump and preferably the returndrain device, which is here shown integrally associated with the pump,are among the parts arranged to be carried on the cover l9, which may besecured in position after the latter has been attached to the container.As will be clear from Figure 2, these are used for securing the pump anddevice to the cover I 9, the screws I! which engage in tapped holes 25provided in enlargements 26 of the cover. The holes 25, incontra-distinction to the corresponding ones 25' formed in the cover 4,extend only partially rather than completely through the cover, and inthis manner even when the screws are removed, such as for permitting therelease or removal of the entire pump and drain device, the closed endof the holes will prevent access thereat to the interior of thecontainer. Preferably the enlargements 26 serve, with the flange 2| andspacer 24, in holding the cover l9 in even spaced relation on cover 4.

Operatively connected with the intake port 21 of the pump is the suctionpipe 9 which extends through both covers I 9 and 4 but is permanentlyanchored to cover 19. Preferably a portion of the pipe protrudes abovethe cover I9 and is threaded so as to engage the threaded flange 28surrounding port 21. It will be understood that pipe 9 has a sealed fitin the cover [9 and as here shown such fit is maintained and the pipesecured to the cover by welding the pipe to the cover at theircontiguous portions. With the pump and pipe thus only threadedlyconnected, attachment of the pump to or detachment thereof from thecover may be effected outside of having to release or replace the screwsl1, merely by rotating the pump. As will be evident from an inspectionof Figure 2, should the pump be removed from off the cover l9, access tothe interior of the container, unless otherwise prevented, would beavailable at the exposed upper end of the suction pipe. To thereforeprevent use of the suction pipe for introducing liquid to the container,there is provided, preferably at the lower extremity of the pipe, acheck valve 3| which prevents discharge of any fluid from the pipe intothe container but will of course permit of the oil in the containerbeing drawn into the pipe.

It will be understood that the function of the drain pipe I3 is normallythat of catching the drippings from the pump discharge orifice 32 andconveying same back into the container. The pipe I3 is so mounted thatit may be swung clear of the orifice 32 when oil to be discharged intosome vessel or the like, and as will be obvious, when the pipe is soswung the intake end thereof is available for introducing into thecontainer liquid other than from the pump. Pipe [3 is mounted on thepump case casting 33, and as will be clear from Figure 2 such casting isformed with pipe I3 and provides an extension therefor to an opening 35in cover I9 aligned with opening 8. Fixed and sealed within the opening35 and extending through the opening 8 is a pipe por tion 36 whose lowerend is open to the container and whose upper end is arranged for contactand operative connection with the pipe portion 34. Within the pipeportion 36 is provided a means for retarding the flow of fluidtherethrough, and as here shown such means preferably comprises aplurality of layers or disks 31 of felt or other fibrous material. Thelayers are so formed and arranged that the flow of liquid through thepipe is considerably restricted, and while the amount of oil normallydeposited in the pipe as drippings from the pump orifice will seepthrough the layers with sufficient freedom to insure proper functioningof the pipe, forcing of an appre ciable amount of oil into the containerat any appreciable speed is by way of this pipe not possible. Thus itwill be clear that notwithstanding the removal of the entire pump andreturn unit, no liquid may be passed into the container either by way ofsuction pipe 9 or opening 35. The upper extremity of pipe portion 36 isformed with an inside flange 38 so as to confine the layers within thepipe and preferably a screen 39 is interposed between the flange and theuppermost layer in the pipe so as to effectively prevent removal of thelayers. If desired the layers may be supported on a pin 4| extendingacross the pipe under the lowermost layer.

Supply of oil by an authorized person to the container is arranged to beeffected through an inlet opening 42 in the cover l9, which openingregisters with opening I of cover 4. The opening 42 is designed to beclosed by a cap 43 which may be locked in closed position, or if desiredthe cap may be of a type which, when once removed from over the opening,cannot be replaced without such removal being evident.

I claim:

1. A liquid dispensing unit arranged for attachment to a container fordischarging the contents thereof and for preventing the unauthorizedrefilling of the container comprising, a plate fixed against detachmentover an end cover of the receptacle, enlargements on the under side ofsaid plate, a pump unit, means for detachably securing said pump unit tothe outer side of said plate including a connection between said pumpand enlargements formed exclusively out of communication with the underside of said plate, and an inlet conduit carried by said plate incommunication with said pump unit and arranged to extend through saidcover and into said receptacle.

2. A liquid dispensing unit arranged for attachment to a container fordischarging the contents thereof and for preventing the unauthorizedrefilling of the container comprising, a plate fixed against detachmetover an end cover of the receptacle, enlargements on the underside ofsaid plate arranged to engage and support said plate from said cover andprovided with threaded openings terminated within said enlargements, apump unit, bolts secured to said pump unit and engaged in said openings,and an inlet conduit carried by said plate in communication with saidpump unit and arranged to extend through said cover and into saidreceptacle.

LLEWELLYN W. EVANS.

